#!/usr/bin/env node

const circle = {
    radius: 5,
    getDiameter: function() {
      return this.radius * 2;
    },
    getArea: function() {
      return Math.PI * this.radius * this.radius;
    },
    getCircumference: function() {
      return 2 * Math.PI * this.radius;
    }
  };
  
module.exports = circle;
console.log("module信息",import.meta.url)

